Detail publikačního výsledku

Numerical simulation of pump-intake vortices

RUDOLF, P.; KLAS, R.

Originální název

Numerical simulation of pump-intake vortices

Anglický název

Numerical simulation of pump-intake vortices

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Pump pre-swirl or uneven flow distribution in front of the pump can induce pump-intake vortices. These phenomena result in blockage of the impeller suction space, deterioration of efficiency, drop of head curve and earlier onset of cavitation. Real problematic case, where head curve drop was documented, is simulated using commercial CFD software. Computational simulation was carried out for three flow rates, which correspond to three operating regimes of the vertical pump. The domain consists of the pump sump, pump itself excluding the impeller and the delivery pipe. One-phase approach is applied, because the vortex cores were not filled with air during observation of the real pump operation. Numerical simulation identified two surface vortices and one bottom vortex. Their position and strength depend on the pump flow rate. Paper presents detail analysis of the flow field on the pump intake, discusses influence of the vortices on pump operation and suggests possible actions that should be taken to suppress the intake vortices.

Anglický abstrakt

Pump pre-swirl or uneven flow distribution in front of the pump can induce pump-intake vortices. These phenomena result in blockage of the impeller suction space, deterioration of efficiency, drop of head curve and earlier onset of cavitation. Real problematic case, where head curve drop was documented, is simulated using commercial CFD software. Computational simulation was carried out for three flow rates, which correspond to three operating regimes of the vertical pump. The domain consists of the pump sump, pump itself excluding the impeller and the delivery pipe. One-phase approach is applied, because the vortex cores were not filled with air during observation of the real pump operation. Numerical simulation identified two surface vortices and one bottom vortex. Their position and strength depend on the pump flow rate. Paper presents detail analysis of the flow field on the pump intake, discusses influence of the vortices on pump operation and suggests possible actions that should be taken to suppress the intake vortices.

Klíčová slova

pump, instake vortex, pump well, CFD

Klíčová slova v angličtině

pump, instake vortex, pump well, CFD

Autoři

RUDOLF, P.; KLAS, R.

Rok RIV

2016

Vydáno

06.05.2015

Nakladatel

EDP Sciences

Kniha

EPJ Web of Conferences

ISSN

2100-014X

Periodikum

EPJ Web of Conferences

Svazek

92

Číslo

5

Stát

Francouzská republika

Strany od

1

Strany do

6

Strany počet

6

URL

https://www.epj-conferences.org/articles/epjconf/abs/2015/11/epjconf_efm2014_02077/epjconf_efm2014_02077.html

Plný text v Digitální knihovně

http://hdl.handle.net/11012/201337

BibTex

@inproceedings{BUT114865,
  author="Pavel {Rudolf} and Roman {Klas}",
  title="Numerical simulation of pump-intake vortices",
  booktitle="EPJ Web of Conferences",
  year="2015",
  journal="EPJ Web of Conferences",
  volume="92",
  number="5",
  pages="1--6",
  publisher="EDP Sciences",
  doi="10.1051/epjconf/20159202077",
  issn="2100-014X",
  url="https://www.epj-conferences.org/articles/epjconf/abs/2015/11/epjconf_efm2014_02077/epjconf_efm2014_02077.html"
}

Dokumenty

epjconf_efm2014_02077